Or if the disk is full; or if it's an IO::Socket::INET handle where the network connection has dropped; etc. Detecting anything that could possibly go wrong with a filehandle is not my aim. The primary use case for IO::Detect is, as stated in the documentation, writing functions that can accept either a file name or a file handle.

For example parse($file) - I want it to accept a filehandle, and I want it to accept a filename. If someone passes a filehandle in write-only mode then that's their own fault and I'm quite happy for it to blow up in their face.

As far as detecting whether a file handle is read or write, I may add that functionality if I come across a situation where it would be useful.

Re FileHandle::Fmode...

$ perl -MFileHandle::Fmode=is_FH -MIO::All -E'say is_FH(IO::All->new("
+/dev/null"))'
0

[download]
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re^4: Best way to check if something is a file handle? by tobyink
in thread Best way to check if something is a file handle? by tobyink

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